Valve-facing device



Aplf14,1925. 1,533,133l

v W. V. NICKAU VALVE. FACING DEVICE Filed Oct. 31'. 1921 NVaEAbiTOR ou BY ATTORNEYS Patented Apr. 14, 1925.

UNITED sTATEs WILLIAM: VICTOR NICKAU, OF RAHVVAY, NEW JERSEY.

VALVE-FACING DEVICE.

Application filed october s1, 1921. semi No. 511,712.Y

To @ZZ whom t may concern.'

Be it known that I, IVILLIAM V. NICKAU, a citizen of the United States, residing at Rahway, county of Union, State of New Jersey, have made a certain new and useful Invention in Valve-Facing Devices, Of which the following is a specification.

This invention relates to valve vices.

rI'he object of the invention is to provide a device which is simple in structure and efficient in operation for facing valve seating surfaces. V

A further object of the invention is to provide a device of the nature referred to wherein the valve is efficiently supported and held in position with relation to a facing tool whereby the seating surface of the valve may be quickly, easily and effectively faced or refaced.

rfhe invention consists substantially in the construction, combination, location, and relative arrangement of parts, all as will be more fully hereinafter set forth, as shown in the accompanying drawing, and finally pointed out in the appended claims. f

Beferringto the accompanying drawing Fig. l is a view in end elevation of a valve facing device embodying the principles of my invention.

F ig. 2 is a view in side elevation of the same.

Fig. 3 is a top plan view.

Fig. 4 is a broken detail view in section on the line live, Fig. 3, looking in the direction of the arrows. y

Fig. 5 is a broken detail view respectively in plan and edge elevation, parts being broken out, showingthe manner of applying the valve turning handle to the valve stem.

In the manufacture of valves for engines, it is necessary to turn or face offtheseating surface of the valve so as to afford an eliicient seating surface therefor. It also frequently happens that the seating surface of the valve becomes pitted from the heat to which the valve in operation is subjected, particularly in the case of valves employed in automobile andV other internal combustion engines, and, moreover, carbon deposits take place upon the valveseating surface. `Wl1en facing dethe valve seating surface becomes pitted by heat or otherwise, or becomes covered with carbon or other deposits or particles thereof, the valve fails to seat properly in a tight fitting manner7 with the result that it'. fails to Vaccon'iplish eiiiciently its valve function, resulting in loss of compresslon 1n the cylinder, and hence loss of power of the engine.v l

It is among the special purposes of my present invention to provide a device which coY tained in proper position and relationV with reference to a facing tool,'wh`ereby, by suitably rotating the tool, or the valve, such seating surface may be quickly and easily surfaced or refaced as required.

I have found that excellent results are oby tained by supporting theV valve means of its stem upon roller bearings whereby-the valve'may be rotated axially with respect to its stem, and its seating surface'maintained in proper relation to an edge tool, whereby, by rotating the valve stem the'surfacing-or refacing of the valve seating surface is effected. Ihave also found it desirableto support the valve stem on its roller bearings at separated points withV reference to thev length of the stein, and in definite relation of the aXis of the valve stem withV reference to the angle of the cutting edge of the facing tool. l

In Y the accompanying drawing I havey shown a structure embodying thev principles of my invention, and aform thereof which I have found-,to be practical, economicall to manufacture, simple in structure, efli-v cient in operation, and wherein 6 designates par suitableV frame adapted to be secured by the lugs 7 toa work bench or other suitable VVor convenient support. The frame is formed with vertical standards 8.

suitably spaced apart from each other, and4 formed with upwardly extending y each forked bracket arms 9, andalso a laterally extending portion 10. Upon the bracket arms 9 are pivotally mounted'levers 1l,

auf

each carrying a roller 12 at its-inner end. f

Each roller 12 cooperates with a pair of spaced apart rollers 13, see Figs. l and fr to forni a roller bearing support, upon ailiff which is-received the stem 1e ofthe valve 15, the seating surface 16 of Which is vto be faced or surfaced. A set screw 17 is tapped through theV outer endfof each lever ,11, and the end of saidV screw 'impinges against or engages the extension of the standard 8, thereby .affording lmeans by which the roller 12 may be raised from clamping; relation with respect to the valve stem kll When the latter isrin position upon the rollers 13, or, when desired, the lever 11 may be-.roclredjtofcarry,the roller 1,2"

into; clamping rengagement with .respect to the valve stem. The. arrangeinentthus described` aords a convenient method for placingthe valve stem inV vposition or removing` it and-.the valve when the refacing operationshave been completed. By `emthe` cl'am-pfbolt- 21.

ploying'two sets lof supporting rollers arranged asabove described, the sets of rollers being'spaced apart from each other, l

'.seeFigs. 2 and3, disposed to overhang` theV valve 15 Whenithe stem of the latter has been mounted and'suitably clamped in 'the' roller bearingsreferred to.L Mounted' in the overhanging portion 19 of the frame is-'the facing tool; 20, which maybe clamped into K positionl thereininany 'suitable or conven-y ient`manner, as, for instance,byvmeans of The cutting edge 22 L ofthetooln2()"is` on a biasorl inclinedevsurface corerspondingto the: inclination of the seating surface 1,6 of the valve, so; thatv by shifting` theI valve stein through the bear-y Y ings afforded by the roller supports the inclined surface 16 of the valvein-ay bel ad;-V vanced against theinclinedgedge 22 of the facing cutter; The provision of roller bearing supports for the valve stein 'permits the' *i longitudinal displacement of, the valve stein c (EO therethrough Without disturbing the sup ports for., the valvev ste-m and Without deranging.. the alignment thereof. The valve may be adjust-ed,Withrelation .to the cutting tool'v in any suitable orconvenient manner.

lhave shown asimple arrangement for this purpose consisting' of a vsety screvvl 23 tapped through t'hervertical end portion 18 `of the frame. and/'adaptedto `abut against thecenter= ofthe valve 15. By tur-ning` up on this adjustingscrevT the valve and its stem may be shifted in the,v` direction of the length ofthe stem, the latter slidingfreely throuoh .itsroller bearing supports; If desired, t ie 'adjusting screw 23 may be locked in, its

adjusted position to maintain the seat-ing` surface 16 of the valveYV in proper vrelation tothe cutting-edge-off the tool 20. I have The end standard 18 ofthe frame isshown for this purpose a lock nut 24 vwhich y is provided with a handle 25 arranged to extend laterally from the frame in position to be easily clamped and lield'or turned to position to form a loclr nut for the screw 23. Y

I have. hereinbefore suggested that the facing operation is`accomplished by rotatively moving the valve and the cuttingtool 20 ivith relation to each other. ln the form of my invention shown for illustrating` the principles thereof, but to which my invention is not to be limited or*re stricted, I propose to axially rotate the valve stem, thereby rotating the valve. 'To vaccomplish this result I employ a detachable c EEO `handle 26 adapted tobe detachably 'ap-1 plied to vthegvalve stem. For this purpose l provide the handle 26 with a` head portion 27' having a 'circularsocket 28,- see Fig. 5, adapted to receive the stem of the valve. Applied to the head portion 27 is a removable block 29 having a@ circular 'bearing surface cornerfor portion 30 which is designed to engage the surf-aceof 'the valve ste-m and clamp thesame into vthe socket 28 ofthe head2?.Y A setv screivfl may serve the purpose of clamping the block 29 to the head 27. ln this' manner the handle 26 is detachably applied to the stem llof the valve, and thefprovisioi'i ofthe blockV 29, asr above described,l enables` the clamp to be appliedto valve stems-of varying` sizes. By clan'ipingV the arm 26 upon` 'he stem of the valve, lsaid stem may' beV axially Vrotated Within its roller bearing supports, thereby accoirnplishing.ther surfacing orl refacing of the valve seating' surface 16 through the action thereon ofr the edge of thecutting-rtool, as Will be readily understood. Y

Many variations and changes in details in structure Willreadily occur to 'thoseA skilled in. the art and still. fall' Within the spirit and scope of my invention.

Y ,l-laving' 'no'i'vv set forth the objects and nature of my invention,vand a structure embodyingrthe principlesfthereof, `what l `claim as new and useful and of my ovvn invention, and desire 4to secure vby lLetters l)=atent,is,- i Y ff 1. In a valve facingI device, aframe having thereon forked extensions, a lever arm pivotally mounted in said extensions, a valve holder mounted Within said frame andincluding a plurality ofi rollers between Y Which the stein ofthe' valve is held for axial rotation, one of said rollersbeinginounted on said lever arm, and means for adjusting said arm'in combination With a facing` tool" mounted in the frame, and means to axially rotate the valve stein and valve Within said roller support. f

2.111 a valve facing device, a frame, and a valve support mounted therein andinizo cluding a pair of rollers between which the stem of the valve is held for axial rotation, a lever arm on which one of said rollers is adjustably held, a set screw extending through said lever. arm, an extension on said frame against which said set screw impinges to adjust the roller, in combination with afacing tool mounted in the frame, means to axially rotate the valve stem and valve within said roller support, and means to adjust thel valve and its stem longitudinally through said roller support.

3. ln a valve facing device, a frame having lateral and forked extensions, lever arms in said forked extensions, and means in said lever arms to bear against said lateral extensions, a valve support mounted Within said frame and including a pair of fixed rollers and an adjustable roller on said arms Cooperating with said fixed rollers to clamp the valve stem between which the stem of the valve is held for axial rotation, in combination with a facing tool having an inclined cutting edge to actupon the surface of the valve to be faced, said tool fixedly mounted in the frame, and means to axially rotate the valve stem and valve within its roller bearing support.

4e. ln a valve facing device, a frame, a plurality of rollers mounted therein, the stem of the valve to be faced adapted t-o be received by and supported between said rollers, a pivotally mounted lever arm on which one of said rollers is movably held for adjustment towards and from the others, arset screw on the free end of said lever arm for adjusting said roller, a 'fac'- ing cutter carried by the frame, and a liandle adapted to be detachably applied to the valve stem to axially rotate the same in said roller bearing.

5. In a valve facing,` device7 a frame, a standard carried thereby, a lever pivotally mounted on said standard'and carrying a roller, a pair of cooperating rollers mounted in said standard, said several rollers forming a roller bearing support'adapted to re- Aceive and support thestem of a valve for axial rotation therein, in combination With a facing cutter mounted `in the frame, and

means to axially rotate the valvestem. Y

6. In a valve facingdevice, a frame, a. standard carried thereby, a lever pivotally Vmounted on said standard and carrying a roller, a pair of cooperating rollers mountedin said standard, said several rollers forming a roller bearing` support adapted to receive and supportthe stem of a valveY 

